The February 20 is known as Musleh Mo'aud day in Jama'at Ahmadiyya. It is in reference to MuslehMo'ud Prophecy. The latter days' promised revivor of faith, Hazrat Promised Messiah Mahdi (on whom be peace) sought a sign from Allah the Exalted to prove the truth of Islam because attacks by non-Muslims on Islam had reached to heights. Hazrat Promised Messiah (a.s.) withdrew to seclusion for forty days to offer special prayers. As the result Allah the Exalted gave him glad tidings of a great son who was to serve true Islam.

He was the second Khalifah of Ahmadiyya Community. During his 52 years of Khilafat, a lot of service to take the peaceful message of Islam to the world was done.